Killingly High School is a public high school in Killingly, Connecticut. The school reported 792 students and 65 FTE classroom teachers for the 2014–2015 school year. Killingly High is the only public high school in the Killingly School District, which is on the eastern edge of Windham County.
Serving 762 students in grades 9-12, Killingly High School ranks in the bottom 50% of all schools in Connecticut for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 25-29% (which is lower than the Connecticut state average of 41%). The percentage of students achieving proficiency in reading/language arts is 55-59% (which is higher than the Connecticut state average of 50%).
The student-teacher ratio of 12:1 is equal to the Connecticut state level of 12:1.
Minority enrollment is 23% of the student body (majority Hispanic), which is lower than the Connecticut state average of 53% (majority Hispanic).
Quick Facts (2025)
- Grades: 9-12
- Enrollment: 762 students
- Student-Teacher Ratio: 12:1
- Minority Enrollment: 23%
- Graduation Rate: 80-84% (Btm 50% in CT)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 25-29% (Btm 50%)
- Reading Proficiency: 55-59% (Top 50%)
- Science Proficiency: 35-39% (Btm 50%)
- Source: National Center for Education Statistics (NCES), CT Dept. of Education
Top Rankings
Killingly High School ranks among the top 20% of public schools in Connecticut for:
Category
Attribute
Most improved public schools
School Overview
Killingly High School's student population of 762 students has declined by 6% over five school years.
The teacher population of 65 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
762 students
Gender %
Total Classroom Teachers
65 teachers
Year Founded
1908
School Motto
Great Things Happen Here!
School Rankings
Killingly High School ranks within the bottom 50% of all 939 schools in Connecticut (based off of combined math and reading proficiency testing data).
The diversity score of Killingly High School is 0.39, which is less than the diversity score at state average of 0.68. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#527 out of 939 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
25-29%
41%
Reading/Language Arts Test Scores (% Proficient)
55-59%
50%
Science Test Scores (% Proficient)
35-39%
47%
Student-Teacher Ratio
12:1
12:1
American Indian
n/a
n/a
Asian
3%
5%
Hispanic
12%
31%
Black
3%
12%
White
77%
47%
Hawaiian
n/a
n/a
Two or more races
5%
5%
All Ethnic Groups
Graduation Rate
80-84%
89%
Eligible for Free Lunch
35%
37%
Eligible for Reduced Lunch
8%
6%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CT Dept. of Education
School Notes
- School Mascot: None (formerly Redmen)
Profile last updated: 02/09/2025
Frequently Asked Questions
What is Killingly High School's ranking?
Killingly High School is ranked #527 out of 939 schools, which ranks it among the bottom 50% of public schools in Connecticut.
What schools are Killingly High School often compared to?
Killingly High Schoolis often viewed alongside schools like Plainfield High School, The Woodstock Academy by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
25-29% of students have achieved math proficiency (compared to the 41% CT state average), while 55-59% of students have achieved reading proficiency (compared to the 50% CT state average).
What is the graduation rate of Killingly High School?
The graduation rate of Killingly High School is 80-84%, which is lower than the Connecticut state average of 89%.
How many students attend Killingly High School?
762 students attend Killingly High School.
What is the racial composition of the student body?
77% of Killingly High School students are White, 12% of students are Hispanic, 5% of students are Two or more races, 3% of students are Asian, and 3% of students are Black.
What is the student-teacher ratio of Killingly High School?
Killingly High School has a student ration of 12:1, which is equal to the Connecticut state average of 12:1.
What grades does Killingly High School offer ?
Killingly High School offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Killingly High School part of?
Killingly High School is part of Killingly School District.
School Reviews
Review Killingly High School. Reviews should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
Recent Articles
Why Single-Sex Public Schools are Growing in Popularity
This article examines the growing trend of single-sex public schools in the United States. It explores the potential benefits, research findings, and controversies surrounding gender-specific education, as well as the factors driving its increasing popularity among parents and educators.
When Teachers Cheat: The Standardized Test Controversies
Teachers across the country are being accused of cheating on standardized tests, using erasers to conveniently change their students’ answers. However, are these teachers driven to cheat because the funding system is flawed?
When Field Trips Turn Deadly: Who is Responsible?
Recent deaths during field trips have parents and school officials questioning the safety of these excursions. Learn about these tragedies and what parameters should be in place to ensure a safe field trip.
